Fuel-injection valve.



I TED STATES PATENT ornicn.

ALFRED OWEN WILLIAMS, OF DETROIT, MICHIGAN.

FUEL-INJECTION VALVE.

Patented Oct. 9, 1917.

Application filed August-22, 1916. Serial No. 116,369.

To all whom, it may concern:

Be it known that I, ALFRED OWEN WIL- LIAMS, a citizen ofthe United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Fuel-Injection Valves, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled inthe art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to apparatus for injecting liquid fuel into the cylinder or the intake manifold of an internal combustion engine, and has for its object an improved valve construction by which the vaporization of the fuel and its admission into the combustion space in desired quantities is effected through centrifugal force:

Figure 1, is a vertical sectional elevation.

of comparatively light high speed enginesbecause of the impossibility of feeding oil positively enough in the small quantity required for each working stroke of the engine, at the relatively high speed at which it is customary to run this type of engine.-

.A. represents the engine cylinder, whose walls may, if desired, be provided with water cooling spaces 13. In one end is screwed the cap or base C. This cap is axially bored, as is the casing D, which is mounted thereabove, to permit the rotatable engagement therethrough of the hollow spindle E, which,

is mounted in .the bronze bearings I above and below the armature. F to rotate therewith, the entire armature 'belng inclosed within the casing D. The rotation of the. armature is effected by the passage of a current through the motor from the transmission wires H controlled by knife switch J. The spring-actuated brushes K serve to keep the desired degree of contact with the armature.

Within the cylinder, and axially in line with the bore through the cap C, is the valve cover L, which is screwed into the outwardly flanged end M of the hollow spindle 'E, which projects downwardly into the upper end of the cylinder A. There is thus in-- closed between the parts L and M a charm 7 her or space 0, in which islocated the mushroomed lower end Q, of the valve stem R, and which, when the engine is running, is full of oil. The peripheral edge of this valve head'Q is slightly upturned so as to form an annular lip P, which, when in up- .permost position, engages tightly between the opposing annular valve surfaces N of the enlargement M of the hollow spindle. At peripheral intervals in the enlargement M along the line y-y, are located a plural ity of radial holes or passages Z, whose inner ends connect with this annular space M which is controlled by the annular lip P.

The valve head is supported on an upwardly extending stem R, which spacedly engages through the hollow central portion of the spindle E and through the stuffing box Y at the top. Between the head U at the upper endof the stem R and this stufling box Y is interposed a spring V, which serves to keep the stem R in normally raised position,

thus keeping the lip P on the valve head Q, a

in position of closure with respect to the annular space M in the enlargement M of the spindle. I

When it is desired to start the engine, the knife switch J is first closed, and the rotation of the motor F begun, oil having been admitted intothe hollow spindle E through the supply pipe S. The engine is cranked, manually or otherwise, to start its operation and the link X whose lower end (not shown) is connected therewith in the usual manner, is thereby pushed upward, thus forcing downwardly the end T of the pivoted lever Wat the moment of maximum compression; this in turn forces the valve stem R axially" downward, unseating the I valve head Q from its seat, and allowing the through the annular space M to the several radial holes Z. The high speed of rotation of the entire spindle E and its head M, un-

"der the actuatlon of the armature F effects the centrifugal projection of the oil through these holes into the engine cylinder A.

These holes Z are so small, however, that combined with the very slight unseating of the valve head Q .at each working stroke of the engine, only the relatively small amount of fuel desired for each explosion is thus ejected, in very small and minutely broken up particles. A throttling action is thus effected by the valve Q, since the quantity of fuel furnished may be regulated either by variations in the length of time the valve is 7 opened and closed respectively, or by variations in the degree to which it is opened, with a constant time period.

What I claim is: v 1. A fuel injection valve, comprising an oil inlet, a rotatable hollow spindle adapted to conduct the oil to the interior of an engine cylinder, a longitudinally movable valve and stem, means for actuating said valve and stem, and means for imparting rotative movement to said rotatable hollow spindle. 2. In a fuel injection valve, the combination of a rotatable hollow spindle, a longitudinally movable valve stem adapted to cooperate therewith in regulating the admission of oil into an engine cylinder, and means for causingthe rotation of said hollow spindle to effect the centrifugal feeding of the Oil.

' 3. In a fuel injection valve, in combination with a rotatable hollow spindle, a valve mounted on one end thereof, an apertured seat for said valve, a spring adapted to yieldingly hold said valve on its seat, and means for actuating said valve lengthwise of its axis to effect its displacement from its seat. a

4:. A fuel injection valve, having in combination a radially apertured circular valve masses seat, a valve member adapted to seatthe-reon, means for feeding a supply of oil toward said valve and its seat, means for actuating said valve from its seat, and means for contemporaneousl rotatin said valve to effect the centrifugal projection of the oil flowing past the valve when actuated, through the apertures in the valve seat.

5. In a fuel injection valve, in combination with a rotatable rollow spindle, a pcripherally apertu-red cover carried on one end thereof, a valve member within said cover, adapted to control the flow to the peripheral apertures therein, a longitudinally movable stem engaging within said hollow spindle and carrying said valve member on one end, means for actuating said stem lengthwise of its axis, and means for rotatably actuating said hollow spindle and its apertured cover.

6. The combination of a longitudinally movable stem, a valve member mounted on the lower end thereof, means for yieldingly holding the stem in raised position, a rotatable hollow spindle through which said stem spacedly engages, an apertured cover carried on the lower end of said hollow spindle, within which said valve member engages, means for actuating said stem lengthwise of its axis, means for rotatably actuating said hollow spindle and its apertured cover, and means for feeding a supply of oil into said hollow spindle.

In testimony whereof, I sign this specification in the presence of two witnesses.

MARY NEAL, WILLIAM M. SWAN. 

